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首页> 外文期刊>Geophysical Research Letters >A stratospheric excess of CO2 - due to tropical deep convection?
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A stratospheric excess of CO2 - due to tropical deep convection?

机译:平流层二氧化碳过量-是由于热带深对流造成的?

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The 'age' of stratospheric air is a measure that characterize's the time scales of stratospheric transport. In this work we present and compare age-values as determined from measurements of CO2 and SF6 on air-samples obtained between 1987 and 1995 on six flights of our balloon-borne cryo-sampler. In the middle stratosphere for five out of six flights we find age-values that are up to three years lower for CO2 than for SF6. This CO2-age anomaly corresponds to an excess of 4-5 ppm CO2. Evidence is presented that this excess-CO2 originates from rapid convective transport of near surface air, Additionally, we show that globally no compact relationship exists between the age of air and mixing-ratios of N2O. [References: 25]
机译:平流层空气的“年龄”是衡量平流层运输时间尺度的一种度量。在这项工作中,我们展示并比较了根据1987年至1995年在我们的气球式低温采样器的六次飞行中获得的空气样本中的CO2和SF6的测量值确定的年龄值。在平流层中部,六分之五的飞行中,我们发现年龄值比SF6的二氧化碳低了三年。此CO2年龄异常对应于过量4-5 ppm CO2。证据表明,这种过量的CO2源自近地表空气的快速对流传输。此外,我们表明,在空气年龄和N2O的混合比之间,全球不存在紧密的关系。 [参考:25]

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